Where are you putting those stickers? I thought you can apply onto it without having to remove anything? I notice my windows start to squeak after I did the tint and now I need to find a remedy for it. One member suggested silicon spray (which I've used on my Accord last time). If you're sending your car for spray paint, they will remove everything anyway. So far mine is normal standard and nothing is broken so I think your professional shop should be alright